British Journal of Haematology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 13, 2024
Vacuoles,
E1
enzyme,
X-linked,
autoinflammatory,
somatic
(VEXAS)
is
a
haemato-inflammatory
syndrome
genetically
defined
by
mutations
in
the
X-linked
UBA1
gene,
typically
Val/Thr/Leu
substitutions
at
Met41
hotspot.
Clinical
manifestations
are
heterogeneous
and
refractory
to
most
haemato-rheumatological
treatments.
To
date,
no
guidelines
exist
for
management
of
VEXAS,
scarce
evidence
on
methodology
clinical
significance
longitudinal
clonal
burden
evaluation
upon
therapy.
Here,
we
validated
method
quantify
explored
its
applicability
patients
with
VEXAS.
Given
different
treatment
interactions,
droplet
digital
polymerase
chain
reaction
(ddPCR)
may
allow
informed
therapeutic
decisions
implementation
personalized
strategies.
Journal of Allergy and Clinical Immunology,
Journal Year:
2023,
Volume and Issue:
151(5), P. 1204 - 1214
Published: March 21, 2023
VEXAS
(Vacuoles,
E1
enzyme,
X-linked,
Autoinflammatory,
Somatic)
is
a
novel
entity
manifesting
with
multiplicity
of
clinical
features.
Somatic
mutations
the
UBA1
gene
in
hematopoietic
stem
cells
constitute
genetic
basis
VEXAS.
As
an
X-linked
disorder,
most
cases
occur
men,
classically
developing
symptoms
during
fifth
to
sixth
decade
life.
Considering
its
multidisciplinary
nature
involving
numerous
branches
internal
medicine,
has
elicited
wide
medical
interest
and
several
conditions
have
been
associated
this
disease.
Even
so,
recognition
everyday
practice
not
necessarily
straightforward.
Close
collaboration
between
different
specialists
mandatory.
Patients
may
manifest
range
features
from
manageable
cytopenias
disabling
life-threatening
autoimmune
phenomena
limited
responses
therapy,
potential
for
progression
hematological
malignancies.
Diagnostic
treatment
guidelines
are
exploratory
include
rheumatological
supportive
care
treatments.
Allogeneic
cell
transplantation
potentially
curative,
but
risks
significant
position
algorithm
yet
be
defined.
Herein,
we
present
variegated
manifestations
VEXAS,
provide
criteria
diagnostic
testing
UBA1,
discuss
options,
including
allogeneic
transplantation,
current
evidence,
future
directions.
Annals of Hematology,
Journal Year:
2024,
Volume and Issue:
103(3), P. 993 - 997
Published: Jan. 12, 2024
Abstract
The
VEXAS
syndrome,
a
genetically
defined
autoimmune
disease,
associated
with
various
hematological
neoplasms
has
been
attracting
growing
attention
since
its
initial
description
in
2020.
While
therapeutic
strategies
have
explored
case
studies,
the
optimal
treatment
strategy
is
still
under
investigation
and
allogeneic
cell
transplantation
considered
only
curative
treatment.
Here,
we
describe
2
patients
who
achieved
complete
molecular
remission
of
underlying
UBA1
mutant
clone
outside
context
HCT.
Both
received
hypomethylating
agent
azacitidine,
deep
triggered
de-escalation
even
cessation
sustained
one
them.
Prospective
studies
are
necessary
to
clarify
which
will
benefit
most
from
therapy
understand
variability
response
different
strategies.
JAMA Dermatology,
Journal Year:
2024,
Volume and Issue:
160(8), P. 822 - 822
Published: June 12, 2024
Importance
VEXAS
(vacuoles,
E1
enzyme,
X-linked,
autoinflammatory,
somatic)
syndrome
is
a
newly
defined
genetic
disease
with
an
estimated
prevalence
of
1
in
4269
men
older
than
50
years
and
marked
by
systemic
inflammation,
progressive
bone
marrow
failure,
inflammatory
cutaneous
manifestations.
Objective
To
define
the
spectrum
manifestations
association
these
findings
clinical,
genetic,
histological
features.
Design,
Setting,
Participants
This
observational
cohort
study
included
data
from
112
patients
who
were
diagnosed
VEXAS-defining
variants
UBA1
between
2019
2023.
Data
collected
medical
record
review
or
directly
evaluated
at
National
Institutes
Health
Bethesda,
Maryland.
Main
Outcomes
Measures
histological,
other
clinical
findings.
A
secondary
outcome
was
response
to
treatment
VEXAS.
Results
Among
(median
[range]
age,
69
[39-79]
years;
111
[99%]
male),
skin
involvement
common
(93
[83%]),
most
frequent
presenting
feature
(68
[61%]).
Of
64
histopathologic
reports
available
60
patients,
predominant
leukocytoclastic
vasculitis
(23
[36%]),
neutrophilic
dermatosis
(22
[34%]),
perivascular
dermatitis
(19
[30%]).
Distinct
pathogenic
associated
specific
The
p.Met41Leu
variant
frequently
dermal
infiltrates
(14
17
[82%]),
often
resembling
histiocytoid
Sweet
syndrome.
In
contrast,
p.Met41Val
vasculitic
lesions
(11
20
[55%])
mixed
leukocytic
infiltrate
(17
[85%]).
Oral
prednisone
improved
67
73
(92%).
Patients
treated
anakinra
developed
severe
injection-site
reactions
(12
16
[75%]),
including
ulceration
(2
12
[17%])
abscess
formation
(1
[8%]).
Conclusions
Relevance
this
show
that
are
early
manifestation
Genetic
evaluation
for
should
be
considered
male
vasculitis,
dermatoses,
chondritis.
Awareness
among
dermatologists
critical
facilitate
diagnosis.
American Journal of Hematology,
Journal Year:
2023,
Volume and Issue:
99(2), P. 254 - 262
Published: Dec. 18, 2023
Abstract
VEXAS
is
a
prototypic
hemato‐inflammatory
disease
combining
rheumatologic
and
hematologic
disorders
in
molecularly
defined
nosological
entity.
In
this
nationwide
study,
we
aimed
at
screenshotting
the
current
diagnostic
capabilities
clinical‐genomic
features
of
VEXAS,
tracked
UBA1
longitudinal
clonal
dynamics
upon
different
therapeutics,
including
allogeneic
hematopoietic
cell
transplant.
We
leveraged
collaboration
between
Italian
Society
Experimental
Hematology
Rheumatology
disseminated
national
survey
to
collect
clinical
molecular
patient
information.
Overall,
13/29
centers
performed
genomic
testing
locally,
Sanger
sequencing
(46%),
next‐generation
(23%),
droplet
digital
polymerase
chain
reaction
(8%),
or
combination
(23%).
A
total
41
male
patients
were
identified,
majority
(51%)
with
threonine
substitutions
Met41
hotspot,
followed
by
valine
leucine
(27%
8%).
Median
age
diagnosis
was
67
years.
All
displayed
anemia
(median
hemoglobin
9.1
g/dL),
macrocytosis.
Bone
marrow
vacuoles
observed
most
cases
(89%).
The
common
association
polychondritis
(49%).
concomitant
myelodysplastic
neoplasm/syndrome
(MDS)
diagnosed
71%
(
n
=
28),
chiefly
exhibiting
lower
Revised
International
Prognostic
Scoring
System
risk
profiles.
Karyotype
normal
all
patients,
except
three
MDS
showing
‐Y,
t(12;16)(q13;q24),
+8.
frequently
mutated
gene
DNMT3A
10),
TET2
3).
At
last
follow‐up,
five
died
two
progressed
acute
leukemia.
Longitudinal
demonstrated
mutational
clearance
following
collected
interdisciplinary
cohort,
characterized
heterogeneous
manifestations
treatments
used.
cases.
Patients
exhibited
various
dynamics.
HemaSphere,
Journal Year:
2024,
Volume and Issue:
8(8)
Published: July 30, 2024
VEXAS
(vacuoles,
E1
enzyme,
X-linked,
autoinflammatory,
somatic)
is
an
inflammatory
syndrome
caused
by
acquired
mutations
in
the
gene
encoding
ubiquitin
like
modifier
activating
enzyme
1
(UBA1)
that
often
fatal.1,
2
Allogeneic
hematopoietic
stem
cell
transplantation
currently
considered
only
curative
treatment
modality.3-6
We
were
first
to
report
eradication
of
virtually
all
UBA1-mutated
cells
hypomethylating
agent
azacitidine,
reflected
clinical
and
genetic
remissions,7
a
finding
confirmed
recent
phase
II
trial.8
Here,
we
persistent,
long-term
(11–84
months)
remissions
patients
responding
with
after
cessation
therapy.
The
data
indicate
azacitidine
may
be
attractive
alternative
transplant
for
disease
reveal
clonal
stability
under
homeostatic
conditions.
Since
its
description
December
2020,1
UBA1
variant-confirmed
diagnosis
was
made
11
at
our
institution
until
February
2024
(all
male,
median
age
67
years,
range
57–77
years).
mutation
detection
panel-based
sequencing
these
performed
as
previously
reported7
described
Supporting
Information
Methods
section.
Of
patients,
eight
have
been
exposed
(administered
dose
75
mg/m2
subcutaneously
once
daily
7
days
4-weekly
schedule).
three
not
two
treated
corticosteroids
deceased
due
infectious
complications,
one
patient
candidate
psychosocial
circumstances.
In
used
last
resort
on
in-house
basis,
failure
multiple
other
lines
treatment,
time
critically
ill
(WHO
performance
status
4)
VEXAS-related
(respiratory)
pathology.
Both
died
shortly
administration
cycle
clinically
active
disease,
before
assessment
response
cycle.
Six
received
cycles
(range,
3–8
cycles)
out-patient
basis
monitoring
response.
characteristics
six
are
listed
Table
1.
Patients
carried
concurrent
DNMT3A
variant
allele
frequency
(VAF)
59%
30%,
respectively,
3
TET2
VAF
4%.
4,
5,
6
no
detected
sequencing.
Three
us
before,
including
whom
retrospect,
is,
azacitidine.7
Long-term
follow-up
initial
reported
here.
study
compliance
Declaration
Helsinki,
gave
informed
consent
participation.
All
because
they
suffered
from
frequent
(life-threatening)
flares
(in
but
4
5
transfusion-dependent)
anemia,
insufficiently
disease-modifying
antirheumatic
drugs
(DMARDs)
and/or
biologicals
(specified
1)
requiring
corticosteroid
concomitant
adverse
events.
note,
four
formally
fulfilled
MDS
criteria
according
WHO
2016
classification,
based
presence
cytopenia
(anemia
Hb
<10
g/dL)
dysplasia
(≥10%
any
lineage),
clonality
demonstrated
mutational
analyses
patients.
Five
(5/6)
achieved
azacitidine.
causative
decreased
67%
(range
56%–86%)
bone
marrow
or
peripheral
blood
start
(indicating
majority
mutation)
≤1%
0%–1%),
which
documented
five
out
1,
retrospective
firstly
cycles).
1%
30%
2%,
consistent
notion
resulted
carrying
both
variants
Genetic
remissions,
indicative
dramatic
reduction
number
cells,
associated
complete
defined
absence
normalization
C-reactive
protein
(CRP)
plasma
increase
hemoglobin
levels
(Figure
1).
immuno-modulatory
(e.g.,
corticosteroids,
DMARDs
tocilizumab)
could
weaned
evaluation
achieving
response,
characteristic
vacuolisation
erythroid
myeloid
precursor
erythroid,
megakaryocytic
lineages,
disappeared.
nonresponder
(patient
3)
total
mutant
remained
high
(VAF
84%).
similar
(4%
3%,
respectively).
Quality
life
anemia
had
improved.
Clinical
symptoms
relatively
mild
stopped,
retrospect
might
too
early
achieve
remission.
stopped
arbitrarily
<
5%.
this
done
colon
carcinoma,
decision
interrupt/stop
upon
grade
2–3
effects
(fatigue
neutropenia)
observation
maintained
drug
cessation.
remaining
genetically-defined
75%
0%
56%
6)
recently
(at
submission
manuscript,
May
2024)
discontinued
fifth
previous
experience
immunomodulatory
(as
specified
completely
except
who
continues
prednisolone
mg
VEXAS-unrelated
reasons.
After
present)
remission
current
follow
up
31
months
11–84
remain
free
manifestations
maintain
stable
normalized
levels.
0%–7%)
during
years.
did
observe
very
gradual
(from
7%)
over
course
further
interest,
notably
affected
episodes
Campylobacter
jejuni
PCR-positive
gastro-enteritis
hospitalization
episode
crystal
proven
gout
2)
Collectively,
findings
confirm
rates
syndrome,
others,7-10
and,
more
importantly,
safely
achievement
resulting
remissions.
This
significant
relevance
it
would
position
available
eradicating
therapeutic
approach
Furthermore,
safeguard
frequently
occurring
drug,
fatigue,
myelosuppression
affecting
quality
life.
warrant
incorporation
interruption
("holiday")
designs
future
prospective
trials
investigating
value
syndrome.
mechanism
eradicates
known
date,
hypothesized
defect
ubiquitin-proteasome
system
sensitizes
agent.
Finally,
shed
new
light
biology
kinetics
clones,
demonstrating
can
many
even
elderly
Although
small
draw
conclusions,
suggest
clones
"homeostatic"
conditions
also
event
"inflammatory
stress"
It
speculated
evolution
takes
years
ultimately,
UBA1-driven
inflammation,
above
critical
threshold,
feed-forward
manner.
Breaking
loop
(with
azacitidine)
thus
result
awaits
experimental
support
Marc
H.
G.
P.
Raaijmakers
conceived
supervised
study.
Anna
M.
Aalbers
responsible
care
collected
data,
wrote
manuscript.
Paul
L.
A.
van
Daele
Virgil
S.
Dalm
edited
Peter
J.
Valk
coordinated
authors
declare
conflict
interest.
research
funding.
corresponding
author
reasonable
request.
Please
note:
publisher
content
functionality
supporting
information
supplied
authors.
Any
queries
(other
than
missing
content)
should
directed
article.
Global Medical Genetics,
Journal Year:
2023,
Volume and Issue:
10(03), P. 133 - 143
Published: July 10, 2023
Abstract
VEXAS
(vacuoles,
E1
enzyme,
X-linked,
autoinflammatory,
somatic)
syndrome
is
a
newly
defined
refractory
adult-onset
autoinflammatory
caused
by
somatic
mutations
in
the
ubiquitin-like
modifier-activating
enzyme
1
(UBA1)
gene
hematopoietic
stem
and
progenitor
cells,
resulting
shift
UBA1
isoform
expression.
Thus,
patients
develop
spectrum
of
systemic
inflammatory
manifestations
hematologic
symptoms.
To
date,
respond
poorly
to
immune
suppressive
drugs,
except
high-dose
glucocorticoids,
no
treatment
guidelines
have
been
established.
Given
high
mortality
rate,
needs
be
taken
seriously
physicians
all
specialties.
This
article
aims
describe
key
features,
pathogenesis,
clinical
better
understand
targeted
improve
prognosis
syndrome.